GOES-17 Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS) X-Ray Sensor (XRS) science-quality Level 1b data in daily aggregated NetCDF-4 files. The product contains calibrated 1-second solar X-ray irradiance measurements from four detectors: XRS-A1 and XRS-A2 in the 0.05-0.4 nm band, and XRS-B1 and XRS-B2 in the 0.1-0.8 nm band. The high-sensitivity A1/B1 detectors use single photodiodes; the lower-sensitivity A2/B2 detectors use quadrant photodiodes. Separate corrected quadrant currents, data-quality and invalid-condition flags, observation times, and instrument and spacecraft ancillary measurements are included. NOAA NCEI generates the science-quality L1b product from GOES-R EXIS Level 0 source data using retrospectively improved processing and updated calibrations, and aggregates the original 30-second segments into daily files. This science-quality processing stream is separate from the operational Level 1b product used for real-time space-weather operations. The NetCDF archive can contain missing or flagged samples. NOAA generally recommends the science-quality Level 2 XRS products for scientific analysis.
Version:2.7.2
Version:2.7.2
GOES-17 Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS) X-Ray Sensor (XRS) science-quality Level 1b data in daily aggregated NetCDF-4 files. The product contains calibrated 1-second solar X-ray irradiance measurements from four detectors: XRS-A1 and XRS-A2 in the 0.05-0.4 nm band, and XRS-B1 and XRS-B2 in the 0.1-0.8 nm band. The high-sensitivity A1/B1 detectors use single photodiodes; the lower-sensitivity A2/B2 detectors use quadrant photodiodes. Separate corrected quadrant currents, data-quality and invalid-condition flags, observation times, and instrument and spacecraft ancillary measurements are included. NOAA NCEI generates the science-quality L1b product from GOES-R EXIS Level 0 source data using retrospectively improved processing and updated calibrations, and aggregates the original 30-second segments into daily files. This science-quality processing stream is separate from the operational Level 1b product used for real-time space-weather operations. The NetCDF archive can contain missing or flagged samples. NOAA generally recommends the science-quality Level 2 XRS products for scientific analysis.
| Role | Person | StartDate | StopDate | Note | |
|---|---|---|---|---|---|
| 1. | InstrumentScientist | spase://SMWG/Person/Janet.L.Machol | |||
| 2. | GeneralContact | spase://SMWG/Person/NOAA.GOES-R.EXIS |
Official NOAA dataset description, citation, access details and lineage.
Documentation of GOES-R EXIS/XRS Level 1b science-quality and operational data products.
Daily aggregated GOES-17 science-quality L1b XRS NetCDF files. Select year and month to obtain individual files.
Center time of each XRS observation, expressed as seconds since 2000-01-01 12:00:00 UTC, neglecting leap seconds.
Solar X-ray irradiance measured by the XRS-A1 high-sensitivity single photodiode (solar minimum channel) in the 0.05-0.4 nm band. The NetCDF variable is calculated assuming a flat spectrum; the recorded irradiance is a band-integrated energy flux at the spacecraft.
Solar X-ray irradiance measured by the XRS-A2 lower-sensitivity quadrant photodiode (solar maximum channel) in the 0.05-0.4 nm band. The NetCDF variable is calculated assuming a flat spectrum; the recorded irradiance is a band-integrated energy flux at the spacecraft.
Solar X-ray irradiance measured by the XRS-B1 high-sensitivity single photodiode (solar minimum channel) in the 0.1-0.8 nm band. The NetCDF variable is calculated assuming a flat spectrum; the recorded irradiance is a band-integrated energy flux at the spacecraft.
Solar X-ray irradiance measured by the XRS-B2 lower-sensitivity quadrant photodiode (solar maximum channel) in the 0.1-0.8 nm band. The NetCDF variable is calculated assuming a flat spectrum; the recorded irradiance is a band-integrated energy flux at the spacecraft.
Corrected electric current from quadrant 1 of the XRS-A2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.
Corrected electric current from quadrant 2 of the XRS-A2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.
Corrected electric current from quadrant 3 of the XRS-A2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.
Corrected electric current from quadrant 4 of the XRS-A2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.
Corrected electric current from quadrant 1 of the XRS-B2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.
Corrected electric current from quadrant 2 of the XRS-B2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.
Corrected electric current from quadrant 3 of the XRS-B2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.
Corrected electric current from quadrant 4 of the XRS-B2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.
Bit-field describing Level 1b processing status and data-quality conditions including pointing, calibration, detector and telemetry anomalies. Interpret individual bits using the NetCDF flag_values, flag_masks and flag_meanings attributes.
Flag field describing potentially invalid measurements, such as detector integration-time changes, stimulus-lamp state changes and EDAC events. Interpret codes using the NetCDF flag_values and flag_meanings attributes.